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| 型號： | P89LPC902FD,112 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 25/53頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC 80C51 MCU FLASH 1K 8-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | LPC900 |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 7.3728MHz |
| 外圍設(shè)備： | 欠壓檢測/復(fù)位，LED，POR，WDT |
| 輸入/輸出數(shù)： | 6 |
| 程序存儲器容量： | 1KB（1K x 8） |
| 程序存儲器類型： | 閃存 |
| RAM 容量： | 128 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.4 V ~ 3.6 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 包裝： | 剪切帶 (CT) |
| 配用： | 622-1006-ND - SOCKET ADAPTER BOARD 568-1759-ND - EMULATOR DEBUGGER/PROGRMMR LPC9X |
| 其它名稱： | 568-1995-1 |
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Philips Semiconductors
P89LPC901/902/903
8-bit microcontrollers with two-clock 80C51 core
Product data
Rev. 05 — 17 December 2004
31 of 53
9397 750 14465
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
8.12.2
Quasi-bidirectional output conguration
Quasi-bidirectional output type can be used as both an input and output without the
need to recongure the port. This is possible because when the port outputs a logic
HIGH, it is weakly driven, allowing an external device to pull the pin LOW. When the
pin is driven LOW, it is driven strongly and able to sink a fairly large current. These
features are somewhat similar to an open-drain output except that there are three
pull-up transistors in the quasi-bidirectional output that serve different purposes.
The P89LPC901/902/903 is a 3 V device, however, the pins are 5 V-tolerant (except
for XTAL1 and XTAL2). In quasi-bidirectional mode, if a user applies 5 V on the pin,
there will be a current owing from the pin to VDD, causing extra power consumption.
Therefore, applying 5 V in quasi-bidirectional mode is discouraged.
A quasi-bidirectional port pin has a Schmitt-triggered input that also has a glitch
suppression circuit.
8.12.3
Open-drain output conguration
The open-drain output conguration turns off all pull-ups and only drives the
pull-down transistor of the port driver when the port latch contains a logic ‘0’. To be
used as a logic output, a port congured in this manner must have an external
pull-up, typically a resistor tied to VDD.
An open-drain port pin has a Schmitt-triggered input that also has a glitch
suppression circuit.
8.12.4
Input-only conguration
The input-only port conguration has no output drivers. It is a Schmitt-triggered input
that also has a glitch suppression circuit.
8.12.5
Push-pull output conguration
The push-pull output conguration has the same pull-down structure as both the
open-drain and the quasi-bidirectional output modes, but provides a continuous
strong pull-up when the port latch contains a logic ‘1’. The push-pull mode may be
used when more source current is needed from a port output. A push-pull port pin
has a Schmitt-triggered input that also has a glitch suppression circuit.
8.12.6
Port 0 analog functions
The P89LPC901/902/903 incorporates an Analog Comparator. In order to give the
best analog function performance and to minimize power consumption, pins that are
being used for analog functions must have the digital outputs and digital inputs
disabled.
Digital outputs are disabled by putting the port output into the Input-Only (high
impedance) mode as described in Section 8.12.4 “Input-only conguration”.
Digital inputs on Port 0 may be disabled through the use of the PT0AD register. On
any reset, the PT0AD bits default to ‘0’s to enable digital functions.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P89LPC902FN | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM |
| P89LPC902FN,129 | 功能描述:8位微控制器 -MCU 80C51 1K FL 128B RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| P89LPC902FN.129 | 制造商:NXP Semiconductors 功能描述:8BIT MCU 1K FLASH 89LC902 DIP8 |
| P89LPC903 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM |
| P89LPC903FD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM |
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